Bi Sheng's movable type changed how ancient China printed its documents, making printing more efficient and easier. Instead of carving an entire book into one huge block, characters are carved into small clay blocks.
Scintillation crystals are used exclusively as detectors in fourth-generation CT scanners
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Scintillation crystals are used exclusively as detectors in _______CT scanners
a. electron beam
b. third-generation
c. fourth-generation
d. spiral
Scintillation counters are widely used in medical imaging used to measure radioactive contamination, radiation measurement gauges, radiation measurement testing, nuclear power plant safety, and radiation.
Scintillation is the process by which the energy of a specific radiation interacting with a certain amount of sensitive material (called a scintillator) is converted into electromagnetic waves. The frequencies of the electromagnetic waves emitted are in or near the visible spectrum.
A scintillator is a substance that exhibits scintillation, the property of luminescence, when excited by ionizing radiation. When a luminescent material collides with an approaching particle, it absorbs the energy and glows (that is, it re-emits the absorbed energy in the form of light).
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Answer:
Self-fulfilling prophecies
Explanation:
This example best illustrates the danger of self-fulfilling prophecies. The country of Superlia only decided to increase its military force because its leaders were worried Piropia would do the same. However, in doing so, they worried the leaders of Piropia, who then ended up increasing their military as well. Therefore, this shows that Superlia, in acting to prevent something, ended up being the cause of it.
The answer is letter B : Authoritarian government has strong central and absolute power, for instance, a Dictatorship system. Regarding this type of government, people must obey and have no freedom. In the other hand, constitutional government is defined by the distributon of power for many who are involved.
